Here’s a small image to better demonstrate my idea. Again like i say i’m not sure if this would be optimised or not as i do not understand the underlying system your working with 😉 (Also to note i’ve just realised my previous post is incorrect ~ clones would still be needed if copying any other frames (it doesn’t matter if they are empty or not) so this feature wouldn’t entirely remove them – same for the “Make Original” option – it would be needed for both clones and empty frames)